EP0200119A2 - Zurückziehbare Wischeranordnung - Google Patents

Zurückziehbare Wischeranordnung Download PDF

Info

Publication number
EP0200119A2
EP0200119A2 EP86105404A EP86105404A EP0200119A2 EP 0200119 A2 EP0200119 A2 EP 0200119A2 EP 86105404 A EP86105404 A EP 86105404A EP 86105404 A EP86105404 A EP 86105404A EP 0200119 A2 EP0200119 A2 EP 0200119A2
Authority
EP
European Patent Office
Prior art keywords
crank
cam
detent
cam members
recess
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP86105404A
Other languages
English (en)
French (fr)
Other versions
EP0200119B1 (de
EP0200119A3 (en
Inventor
Hideshi Sahara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asmo Co Ltd
Original Assignee
Asmo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Asmo Co Ltd filed Critical Asmo Co Ltd
Publication of EP0200119A2 publication Critical patent/EP0200119A2/de
Publication of EP0200119A3 publication Critical patent/EP0200119A3/en
Application granted granted Critical
Publication of EP0200119B1 publication Critical patent/EP0200119B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/16—Means for transmitting drive
    • B60S1/18—Means for transmitting drive mechanically
    • B60S1/185—Means for transmitting drive mechanically with means for stopping or setting the wipers at their limit of movement
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18416—Rotary to alternating rotary
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18416—Rotary to alternating rotary
    • Y10T74/18456—Crank, pitman, and lever
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2173—Cranks and wrist pins
    • Y10T74/2179—Adjustable

Definitions

  • This invention relates to a wiper apparatus for wiping a windshield of an automobile, and more particularly to improvements on a retractable type wiper apparatus the wiper blade of which is adapted to be retracted or concealed from view when not in use.
  • Japanese Utility Model Application Public Disclosure No. 59-190648 discloses a typical retractable wiper apparatus of the type described, as shown in Figs. 20 to 22 attached to the present application.
  • the prior art wiper apparatus illustrated therein comprises a first crank 2 connected to and locked by a nut 4 to an output shaft 1 of a reducer which is in turn connected to a wiper motor, and a second crank 3 which is secured to the first crank by means of a first' pivot shaft 5 projecting from the second crank and a nut 6.
  • the first crank 2 is formed with stop shoulders 7 and 8 having locking recesses 7a and 8a, respectively.
  • Secured to the second crank 3 is a second pivot shaft 9 over which a cam 10 is fitted.
  • a bearing 11 is also fitted over the pivot shaft 9 and secured integrally to the cam 10.
  • a first link 12 is secured to the bearing 11 by means of a socket 13 which is connected to the link 12 and adapted to receive the bearing 11.
  • a wiper blade 14 is supported by an arm 15 which is secured at a pivot 16 to a second link 17 which is in turn connected to the first link 12.
  • a detent 18 engageable with locking recesses 7a, 8a is slidably mounted in a guide frame 20 and is biased outwardly by a spring 19.
  • the frame 20 is fastened to the second crank 3 by screws 21.
  • the motor output shaft 1 is rotated in the forward direction of rotation as indicated by the arrow P.
  • the rotation of the first crank 2 in this direction causes the second crank 3 connected by links 12 and 17 to the wiper arm 15 to be relatively rotated about the pivot shaft 5 due to the rotational resistance of the second crank until the second crank is bent relative to the first crank and comes into abutment with the stop shoulder 8 of the first crank 2, whereupon the detent 18 is urged into the recess 7a to lock the second crank to the first crank at said bent-angle.
  • the second crank 3 While angled relative to the first crank 2 as shown in Fig. 22, the second crank 3 is thus rotated about the output shaft 1 in the direction P, whereby the pivot pin 16 is moved in its reciprocal rotating motion by means of the links 12, 17 to operate the wiper blade 14 for wiping action.
  • the range in which the wiper blade is reciprocally moved with the second crank 3 angled relative to the first crank 2 is a normal range of operation.
  • the wiper blade is stopped at the extreme end A of the range of operation by an automatic stopping - at - fixed position mechanism (not shown).
  • the wiper motor When it is desired to stow away or retract the wiper arm from its normal stop position, the wiper motor is driven in the reverse direction, so that the first crank 2 is rotated in a direction opposite from that indicated by the arrow P.
  • the second crank 3 which is connected to the wiper blade by means of the links is caused to relatively rotate about the pivot shaft 5 due to the rotational resistance until the crank 3 comes into abutment with the stop shoulder 7 of the first crank 2 to assume the straight extended position whereupon the detent 17 is urged into the recess 8a to lock the second crank at its extended position.
  • the cam 10 fitted over the pivot shaft 9 of the second crank 3 is rotated in unison with the link 12.
  • the cam 10 is adapted to press and lock the detent 18 which is in engagement with the recess 7a during the forward rotation for the wiping operation and to disengage from the detent upon reverse - rotation through some degrees of angle (about 35°) after the normal rotation (180°) and press and lock the detent 18 as it is engaged with the recess 8a when the second crank 3 is completely extended relative to the first crank.
  • the present invention provides a retractable type wiper apparatus comprising a first crank connected to an output shaft of a reducer of a wiper motor; a second crank rotatably secured to the first crank by means of a first pivot shaft and so arranged that the second crank is kept bent at a predetermined angle relative to the first crank during the rotation of the first crank in the forward direction, and kept extended substantially straight relative to the first crank during the rotation of the first crank in the reverse direction; a detent slidably mounted in the second crank and adapted to be resiliently urged into a first recess and a second recess in the first crank to thereby lock the second crank in place when the second crank is positioned at the predetermined angled and at the straight extended position, respectively relative to the first crank; link means rotatably connected to the second crank by means of a second pivot shaft for transmitting the motion of the second crank to a wiper blade; and cam means rotatably mounted over the second pivot shaft and adapted to press and lock said detent as it is urged into
  • the cam means for pressing and locking the detent in place comprises two cam members cooperating to always maintain the detent in its pressed and locked position during the rotation of the output shaft of the reducer in the forward direction (wiping'operation) whatover angular position the cams may be at whereby there may be no chattering or creaking during the wiping operation.
  • FIG. 1 to 3 components of the wiper apparatus of this invention which are similar to corresponding components of the prior art wiper apparatus described hereinabove and shown in Figs. 20 - 22 are designated by the same reference numerals as in the prior art apparatus.
  • the wiper apparatus comprises a first crank 2 connected to and locked by a nut 4 to an output shaft 1 of a reducer (not shown) which is in turn connected to a wiper motor (not shown), and a second crank 3 which is secured to the first crank 2 by means of a first pivot shaft 5 projecting from the second crank and a nut 6.
  • the first crank 2 is formed with stop shoulders 7 and 8 having locking recesses 7a and 8a, respectively.
  • a second pivot shaft 9 over which cam means comprising two stacked cam members 30, 31 is rotatably mounted.
  • a bearing 11 is integrally connected with the upper cam member 30 of the cam means and is also fitted over the pivot shaft 9.
  • a first link 12 is securedly connected to the bearing 11 by means of a socket 13 adapted to receive the bearing and having slots 13a for receiving connecting pins lla projecting from the bearing to prevent relative rotational movement between the socket and bearing.
  • a snap ring 13b is mounted on the shaft 9 to retain the bearing 11 in place.
  • the cam members 30 and 31 are formed around its periphery with two notches 30a, 30b and 31a, 31b, respectively spaced apart from each other by a displacement angle 6 of 120° as shown in Figs. 4A - 4C and SA - 5C.
  • the upper cam member 30 connected integrally with the bearing 11 is further formed with a concentric arcuate slot 30C extending through a lost-motion angle of 60°.
  • the lower cam member 31 has a projection extending therefrom and adapted to be inserted into the arcuate slot 30C.
  • Figs. 6A and 6B illustrate the wiper blade 14 stopped at the retracted position B wherein the second crank 3 is extended straight in axial alignment with the first crank 2.
  • the notches 30a, 30b and 31a, 31b of the cam members 30 and 31, respectively are in alignment with each other, and the aligned notches 30a, 31a are in an angular position opposing the detent 18, so that the detent, released from the locking action by the cam members 30, 31, is urged into the locking recess 8a by the biasing force of the spring 19 alone.
  • Figs. 7A and 7B illustrate the first crank 2 rotated through about 30° by the driving of the wiper motor in the forward direction, whereby the detent 18 is dislodged from the recess 8a and urged into the recess 7a with the second crank 3 bent at the corresponding angle relative to the first crank 2.
  • Figs. 8A and 8B illustrate the first crank 2 further rotated through about 60°, whereby the cam member 30 is rotated through a corresponding angle while the projection 31C of the second cam 31 relatively moves along the arcuate slot 30C from one end to the other end thereof where there is a displacement in phase between the notches 30a, 30b of the cam member 30 and the notches 31a, 31b, whereby the two cam members cooperate to define a complete circular cam to lock the detent 18 in place.
  • cam members 30 and 31 will be rotated . in unison while maintaining the detent 18 locked.
  • Figs. 9A and 9B illustrate the wiper blade 14 having arrived at one extreme end C of the wiping movement, from which the wiper blade is reversed in its direction of movement.
  • Figs. 10A and 10B illustrate the wiper blade being rotated in the reverse direction.
  • Figs. 11A and 11B illustrate the wiper blade 14 having reached the other extreme end A of the wiping movement which is the point of reversal for the normal wiping operation.
  • a switch (not shown) disposed in an electric power supply circuit (not shown) is thrown into an "off" position, said circuit having an automatic stopping - at - fixed position mechanism and a reversing mechanism for the wiper motor.
  • the wiper motor is continued to be rotated in the forward direction under the control of the circuit until the wiper blade 14 is moved from the position A back to the position C whereupon the motor is reversed.
  • Figs. 12A and 12B illustrate the wiper blade 14 moved back to the point of reversal C where the wiper motor is reversed to rotate the output shaft 1 in the reverse direction.
  • Figs. 13A and 13B illustrate the first crank 2 rotated through about 60° by the reverse rotation of the output shaft 1.
  • the notches 30a, 30b and 31a, 31b of the cam members 30 and 31, respectively are in alignment with each other, and the aligned notches 30b, 31b are in an angular position opposing the detent 18, so that the detent is released from the locking action by the cam members.
  • Figs. 14A and 14B illustrate the detent 18 dislodged from the recess 7a and urged into the recess 8a while the second crank 3 is disengaged from the stop shoulder 8 and brought into abutment with the stop shoulder 7 so that the first and second cranks are straightened in longitudinal alignment.
  • Figs. 15A and 15B illustrate the first and second cranks 2, 3 further rotated in the reverse direction until the wiper blade 14 has.reached the extreme end A of the normal wiping movement.
  • Figs. 16A and 16B illustrate the first and second cranks 2, 3 in their straightened position continuing to rotate until the wiper blade 14 has been moved from the extreme end A of the wiping movement to the retracted position B.
  • the automatic stopping - at - fixed position mechanism is actuated to stop the wiper motor.
  • the wiper blade 14 is thus moved to the retracted position B by the reverse rotation of the output shaft 1, the notches 30a, 30b and 31a, 31b of the cam members 30 and 31, respectively are aligned with each other, and the aligned notches 30a, 31a are in an angular position opposing the detent 18 to release the locking action on the detent.
  • the angle of displacement between the notches 30a, 31a and 30b, 31b of the cam members 30 and 31 is shown as 120°
  • the angle of arc (lost motion) of the arcuate slot 30C of the cam member 30 is shown as 60°
  • the bent angle between the first and second cranks 2, 3 is described as 30°, these angles may be varied depending upon the amount in which the wiper blade is to be retracted.
  • Figs. 17 to 19 show an alternate embodiment of the wiper apparatus of this invention, in which component portions of the wiper apparatus which are similar to corresponding portions of the wiper apparatus shown in Figs. 1 - 16 are designated by the same reference numerals as in the first embodiment.
  • an arcuate stop member 33 is fitted at its opposite ends over a pair of spaced apart pins upstanding from the first crank 2, in substitution for the stop shoulders 7 and 8 in the first embodiment.
  • the stop member 33 is further secured by a screw 34.
  • the straight extended position and the angled position that the second crank assumes relative to the first crank 2 are determined by an extension 3a of the second crank abutting against the opposite ends of the stop member 33 adjacent the pins 32.
  • the arcuate stop member 33 is formed adjacent the opposite ends thereof with a pair of spaced locking recesses 7a and 8a for receiving the detent 18 at its angled and straight extended positions, respectively.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
EP86105404A 1985-04-20 1986-04-18 Zurückziehbare Wischeranordnung Expired - Lifetime EP0200119B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP60084786A JPS61244639A (ja) 1985-04-20 1985-04-20 格納式ワイパ−装置
JP84786/85 1985-04-20

Publications (3)

Publication Number Publication Date
EP0200119A2 true EP0200119A2 (de) 1986-11-05
EP0200119A3 EP0200119A3 (en) 1988-10-05
EP0200119B1 EP0200119B1 (de) 1991-06-12

Family

ID=13840379

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86105404A Expired - Lifetime EP0200119B1 (de) 1985-04-20 1986-04-18 Zurückziehbare Wischeranordnung

Country Status (4)

Country Link
US (1) US4686733A (de)
EP (1) EP0200119B1 (de)
JP (1) JPS61244639A (de)
DE (1) DE3679706D1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0405535A3 (en) * 1989-06-30 1992-01-22 Asmo Co. Ltd. Retractable wiper device
CN108973936A (zh) * 2017-06-05 2018-12-11 法雷奥系统公司 支承件、连杆装置子组件和连杆装置及锁定连杆的方法

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2581945B1 (fr) * 1985-04-01 1987-08-07 Marchal Equip Auto Mecanisme de transmission, notamment pour essuie-glace, et dispositif d'essuie-glace equipe d'un tel mecanisme
FR2630068B1 (fr) * 1988-04-13 1990-08-24 Valeo Systemes Dessuyage Dispositif d'entrainement d'un balai d'essuie-glace permettant une mise en position de retrait
FR2648410B1 (fr) * 1989-06-15 1991-08-23 Valeo Systemes Dessuyage Dispositif d'essuie-glace permettant une mise en position de retrait
JP2836119B2 (ja) * 1989-09-29 1998-12-14 アイシン精機株式会社 ワイパ
US5522280A (en) * 1993-12-23 1996-06-04 United Technologies Motor Systems, Inc. Connecting links for windshield wipers and method for fabricating the link
US5408719A (en) * 1994-06-06 1995-04-25 Chrysler Corporation Single arm windshield wiper assembly with a telescoping wiper blade
US5826294A (en) * 1995-11-27 1998-10-27 Ford Motor Company Compact depressed park wiper system with clutch lock mechanism
DE19908489A1 (de) * 1998-03-04 2000-05-18 Asmo Co Ltd Wiper Apparatus
KR20030027284A (ko) * 2001-09-28 2003-04-07 현대자동차주식회사 자동차용 와이퍼 링케이지 이탈 방지구조
DE102010001968A1 (de) * 2010-02-16 2011-08-18 Robert Bosch GmbH, 70469 Wischergestänge

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2014051C3 (de) * 1970-03-24 1973-09-13 Swf-Spezialfabrik Fuer Autozubehoer Gustav Rau Gmbh, 7120 Bietigheim Scheibenwischer für Fahrzeuge, insbesondere Kraftfahrzeuge
US3942385A (en) * 1974-09-13 1976-03-09 Ford Motor Company Actuating mechanism for imparting oscillatory motion to an output shaft
JPS57118957A (en) * 1981-01-14 1982-07-24 Nissan Motor Co Ltd Wiper unit with rise-up mechanism
DE3230695A1 (de) * 1981-11-20 1983-05-26 Robert Bosch Gmbh, 7000 Stuttgart Wischvorrichtung fuer scheiben von kraftfahrzeugen
JPS59190648A (ja) * 1983-04-13 1984-10-29 Hitachi Ltd 高温用基準電極
GB2138674B (en) * 1983-04-28 1986-06-25 Rolls Royce Motors Ltd A transmission mechanism
IT1166515B (it) * 1983-05-25 1987-05-06 Magneti Marelli Spa Manovellismo per portare le spatole di un tergicristallo e simili in una posizione di parcheggio spostata rispetto alla posizione di arresto e relativo circuito elettrico di comando

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0405535A3 (en) * 1989-06-30 1992-01-22 Asmo Co. Ltd. Retractable wiper device
US5168594A (en) * 1989-06-30 1992-12-08 Asmo Co., Ltd. Retractable wiper device
CN108973936A (zh) * 2017-06-05 2018-12-11 法雷奥系统公司 支承件、连杆装置子组件和连杆装置及锁定连杆的方法

Also Published As

Publication number Publication date
US4686733A (en) 1987-08-18
EP0200119B1 (de) 1991-06-12
EP0200119A3 (en) 1988-10-05
JPS61244639A (ja) 1986-10-30
DE3679706D1 (de) 1991-07-18

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